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Table 2 Patient characteristics

From: Reduction of nosocomial pneumonia after major burns by trace element supplementation: aggregation of two randomised trials

 

Study 1

Study 2

Study 1 versus Study 2

 

(n = 20)

(n = 21)

 
 

Supplemented group

Placebo group

Total

Supplemented group

Placebo group

Total

P valuea

 

(n = 10)

(n = 10)

(n = 20)

(n = 11)

(n = 10)

(n = 21)

 

Age (years)

39.4 ± 15.8

42.6 ± 13.9

41.0 ± 14.6

46.3 ± 15.2

38.4 ± 16.2

42.5 ± 15.8

0.75

Burned BSA percentage

51.5 ± 22.5

44.9 ± 9.7

48.2 ± 17.2.

44.9 ± 22.3

44.3 ± 20.2

44.6 ± 20.8

0.55

Inhalation injury

2 (20%)

5 (50%)

7 (35%)

5 (46%)

4 (40%)

9 (43%)

0.75

SAPS II score

29.0 ± 6.4

27.2 ± 10.0

28.1 ± 8.3

34.3 ± 8.2

32.4 ± 9.3

33.4 ± 8.6

0.052

Ryan score

0.9 ± 0.8

1.0 ± 0.8

1.0 ± 0.8

1.1 ± 1.0

0.9 ± 0.7

1.0 ± 0.9

0.85

Patients on mechanical ventilation for >24 hours

8 (80%)

8 (80%)

16 (80%)

10 (90%)

9 (90%)

19 (90%)

0.34

  1. aStudies compared by independent t test for continuous data and Fisher exact test for categorical data. BSA, body surface area; SAPS II, Simplified Acute Physiology Score.